ST-E2 transmitter Canon EOS flash system

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the speedlite transmitter st-e2 camera-mounted infrared controller canon s flashes. allows multiple off-camera flashes fired in e-ttl mode without need connecting wires.


flashes being triggered st-e2 can assigned either group or group b, , st-e2 can configured user-set ratio of flash output between 2 groups, ratios varying 8:1 1:8 in half-stop increments.


high-speed sync supported st-e2, not support second-curtain synchronization or stroboscopic flash.


a built-in focus assist light allows st-e2 used camera focus in low light.


the speedlite 550 ex, 580ex, 580ex ii , 600 ex-rt (when used optical master) flashes use modulation of pre flash main flash tube communicating slave flashes. st-e2 uses modulated flash tube purpose, fitted near infra-red filter (it serves no other purpose). has quoted range of 10-15m indoors, , 8-10m outdoors.


the st-e2 uses single 2cr5 lithium battery, said 1500 transmissions.








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